diff --git a/packages/replace/src/index.js b/packages/replace/src/index.js
index 48f624ad8..5d0427769 100755
--- a/packages/replace/src/index.js
+++ b/packages/replace/src/index.js
@@ -25,6 +25,7 @@ function getReplacements(options) {
   delete values.sourcemap;
   delete values.sourceMap;
   delete values.objectGuards;
+  delete values.preventAssignment;
   return values;
 }
 
diff --git a/packages/replace/test/fixtures/form/observe-plugin-options/_config.js b/packages/replace/test/fixtures/form/observe-plugin-options/_config.js
index 5d1b7ba76..f472fef74 100755
--- a/packages/replace/test/fixtures/form/observe-plugin-options/_config.js
+++ b/packages/replace/test/fixtures/form/observe-plugin-options/_config.js
@@ -6,6 +6,7 @@ module.exports = {
     sourcemap: true,
     sourceMap: true,
     include: '**/input.js',
-    exclude: 'node_modules/**'
+    exclude: 'node_modules/**',
+    preventAssignment: false
   }
 };
diff --git a/packages/replace/test/fixtures/form/observe-plugin-options/input.js b/packages/replace/test/fixtures/form/observe-plugin-options/input.js
index 58a951275..3c553f2cc 100755
--- a/packages/replace/test/fixtures/form/observe-plugin-options/input.js
+++ b/packages/replace/test/fixtures/form/observe-plugin-options/input.js
@@ -5,4 +5,5 @@ console.log(`
   sourceMap
   include
   exclude
+  preventAssignment
 `);
diff --git a/packages/replace/test/fixtures/form/observe-plugin-options/output.js b/packages/replace/test/fixtures/form/observe-plugin-options/output.js
index cbf28032f..df587965c 100755
--- a/packages/replace/test/fixtures/form/observe-plugin-options/output.js
+++ b/packages/replace/test/fixtures/form/observe-plugin-options/output.js
@@ -5,4 +5,5 @@ console.log(`
   sourceMap
   include
   exclude
+  preventAssignment
 `);
diff --git a/packages/replace/test/snapshots/form.js.md b/packages/replace/test/snapshots/form.js.md
index 014ff876f..e8b50f05c 100644
--- a/packages/replace/test/snapshots/form.js.md
+++ b/packages/replace/test/snapshots/form.js.md
@@ -37,6 +37,7 @@ Generated by [AVA](https://avajs.dev).
       sourceMap␊
       include␊
       exclude␊
+      preventAssignment␊
     \`);`
 
 ## process-check: Handles process type guards in replacements
diff --git a/packages/replace/test/snapshots/form.js.snap b/packages/replace/test/snapshots/form.js.snap
index 297ea1cd9..310c56eb3 100644
Binary files a/packages/replace/test/snapshots/form.js.snap and b/packages/replace/test/snapshots/form.js.snap differ
diff --git a/packages/replace/test/snapshots/misc.js.snap b/packages/replace/test/snapshots/misc.js.snap
index 73ae474b8..a62804a04 100644
Binary files a/packages/replace/test/snapshots/misc.js.snap and b/packages/replace/test/snapshots/misc.js.snap differ
diff --git a/packages/replace/test/snapshots/sourcemaps.js.snap b/packages/replace/test/snapshots/sourcemaps.js.snap
index 8771f7074..d6aa96543 100644
Binary files a/packages/replace/test/snapshots/sourcemaps.js.snap and b/packages/replace/test/snapshots/sourcemaps.js.snap differ